Large area DC dielectric breakdown voltage measurement of BOPP and PTFE thin films

The DC dielectric breakdown strength of polytetrafluoroethylene (PTFE) thin films is not widely available. A large-area breakdown measurement on self-clearing polymer films rapidly provides extensive data sets, but presents challenges in data analysis. This research extends the large-area method used on BOPP and other polymers to PTFE thin films. Measurements obtained from the large-area method are compared to more traditional, single breakdown per sample measurements.